The Green Line separating Israel and the Palestinian Territories The Green Line is the border that separates Israel. The 49th Parallel US-Canada Border The border between the USA and Canada runs along the 49th parallel. still a visible imprint on the landscape (ex. Rwanda) Relic boundary no longer a boundary, often the outcome of political changes. may not reflect exsisting cultural landscape (ex. Ethnic boundaries are not internationally recognized they delineate the. DS (font: Arial,sans-serif 12.0pt text-align:left color:#000000) boundary Consequent superimposed boundary National boundaries are. Implications for the conditions that produce attentional tunneling are discussed.Proposed site boundary superimposed on CRZ Map by National Centre For Earth Science Studies, Thiruvananthpuram) New experiments show that the shift cost is eliminated when the cue occupies a known, fixed location on the HUD. This 'shift cost' was taken as evidence that the HUD captures attention, which then has to be shifted to the 'out-the-world' scene before the target can be identified. Previous work (McCann, Foyle, & Johnston, 1993) has shown that when subjects process a cueing stimulus and then identify a geometric target, performance is slower when the cue appears on the HUD and the target appears on the runway surface, compared to a control condition where the cue and target are both on the runway surface. Example: The boundaries in Africa negotiated by European powers at the Berlin Conference (right) regardless of language (left) and ethnic (middle) boundaries. Attentional capture by superimposed symbology: boundary conditions We report new results from an ongoing set of experiments in which subjects view a computer-generated display consisting of a set of stationary symbols (e.g., a 'HUD') superimposed on a dynamic view of a runway as it appears to the pilot during final approach. A superimposed boundary line is placed over and ignores an existing cultural pattern.

Superimposed boundary